package com.yks.pls.amazon.mws.products.model.browseTreeReport;

import java.util.List;

/**
 * @Description
 * @Author
 * @Date 2019/8/23 13:14
 **/
public class Demo {
    public static void main(String[] args) {
        String ass="123";
        boolean matches = ass.matches("\\d?");

        System.out.println(matches);
    }
}
